diff --git a/Gemfile.lock b/Gemfile.lock
index 4de9cff..a0330f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
       gherkin (~> 3.2.0)
     cucumber-wire (0.0.1)
     diff-lcs (1.2.5)
-    ffi (1.9.10)
+    ffi (1.13.1)
     gherkin (3.2.0)
     json (2.3.0)
     method_source (0.8.2)